/Engine/Plugins/Runtime/MeshModelingToolset/Source/MeshModelingTools/Public/DrawPolygonTool.h
void GetPolygonParametersFromFixedPoints ( const [TArray](API\Runtime\Core\Containers\TArray)< FVector3d > & FixedPoints, FVector2d & FirstReferencePt, FVector2d & BoxSize, double & YSign, double & AngleRad )